Calculator or similar article

Details Calculator or similar article Calculator or similar article

1986-03-04

1988-10-04

Zarfas, Louis S.

Printing and office machinery

Typewriter or calculator

Calculator

Patent

active

D02979462

REFERENCES:
patent: D238582 (1976-01-01), Hauser
patent: D280832 (1985-10-01), Mineta
patent: D291450 (1987-08-01), Gubbe et al.
patent: D295747 (1988-05-01), Grange et al.

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